(19)
(11) EP 1 420 618 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.12.2009 Bulletin 2009/49

(43) Date of publication A2:
19.05.2004 Bulletin 2004/21

(21) Application number: 03256789.3

(22) Date of filing: 28.10.2003
(51) International Patent Classification (IPC): 
H05G 1/44(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 15.11.2002 JP 2002332576

(71) Applicant: CANON KABUSHIKI KAISHA
Tokyo (JP)

(72) Inventors:
  • Yamazaki, Tatsuya Canon Kabushiki Kaisha
    Shimomaruko (JP)
  • Morishita, Masakazu Canon Kabushiki Kaisha
    Shimomaruko (JP)
  • Kobayashi, Isao Canon Kabushiki Kaisha
    Shimomaruko (JP)
  • Tsujii, Osamu Canon Kabushiki Kaisha
    Shimomaruko (JP)
  • Hirai, Akira Canon Kabushiki Kaisha
    Shimomaruko (JP)
  • Tamura, Toshikazu Canon Kabushiki Kaisha
    Shimomaruko (JP)
  • Nonaka, Hideki Canon Kabushiki Kaisha
    Shimomaruko (JP)
  • Ishii, Takamasa Canon Kabushiki Kaisha
    Shimomaruko (JP)

(74) Representative: Hitching, Peter Matthew et al
Canon Europe Ltd
3 The Square Stockley Park Uxbridge Middlesex UB11 1ET
3 The Square Stockley Park Uxbridge Middlesex UB11 1ET (GB)

   


(54) X-Ray imaging apparatus


(57) An X-ray imaging apparatus including an X-ray generation means and an X-ray detector on which a plurality of different types of grids is removably mountable. The X-ray detector includes an automatic exposure control (AEC) detector which detects the quantity of X-rays emitted from the X-ray generation means and outputs a signal based on the detected quantity. The X-ray imaging apparatus also includes control means controlling the X-ray generation means based on the signal output from the AEC detector, and correcting the AEC detector output according to the type of grid used.







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